21901565

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89}}^2$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 30762240

約数和(自身を除く): 8860675

約数列:

[1, 5, 7, 35, 79, 89, 395, 445, 553, 623, 2765, 3115, 7031, 7921, 35155, 39605, 49217, 55447, 246085, 277235, 625759, 3128795, 4380313, 21901565]

約数ペア:

[(1, 21901565), (5, 4380313), (7, 3128795), (35, 625759), (79, 277235), (89, 246085), (395, 55447), (445, 49217), (553, 39605), (623, 35155), (2765, 7921), (3115, 7031)]